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/*
* Copyright (C) 2007 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.collect.testing.testers;
import static com.google.common.collect.testing.features.CollectionFeature.ALLOWS_NULL_VALUES;
import static com.google.common.collect.testing.features.CollectionFeature.RESTRICTS_ELEMENTS;
import static com.google.common.collect.testing.features.CollectionFeature.SUPPORTS_ADD_ALL;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;
import static java.util.Collections.singletonList;
import com.google.common.collect.testing.AbstractCollectionTester;
import com.google.common.collect.testing.MinimalCollection;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import java.lang.reflect.Method;
import java.util.List;
/**
* A generic JUnit test which tests addAll operations on a collection. Can't be
* invoked directly; please see
* {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
*
* <p>This class is GWT compatible.
*
* @author Chris Povirk
* @author Kevin Bourrillion
*/
@SuppressWarnings("unchecked") // too many "unchecked generic array creations"
public class CollectionAddAllTester<E> extends AbstractCollectionTester<E> {
@CollectionFeature.Require(SUPPORTS_ADD_ALL)
public void testAddAll_supportedNothing() {
assertFalse("addAll(nothing) should return false",
collection.addAll(emptyCollection()));
expectUnchanged();
}
@CollectionFeature.Require(absent = SUPPORTS_ADD_ALL)
public void testAddAll_unsupportedNothing() {
try {
assertFalse("addAll(nothing) should return false or throw",
collection.addAll(emptyCollection()));
} catch (UnsupportedOperationException tolerated) {
}
expectUnchanged();
}
@CollectionFeature.Require(SUPPORTS_ADD_ALL)
public void testAddAll_supportedNonePresent() {
assertTrue("addAll(nonePresent) should return true",
collection.addAll(createDisjointCollection()));
expectAdded(samples.e3, samples.e4);
}
@CollectionFeature.Require(absent = SUPPORTS_ADD_ALL)
public void testAddAll_unsupportedNonePresent() {
try {
collection.addAll(createDisjointCollection());
fail("addAll(nonePresent) should throw");
} catch (UnsupportedOperationException expected) {
}
expectUnchanged();
expectMissing(samples.e3, samples.e4);
}
@CollectionFeature.Require(SUPPORTS_ADD_ALL)
@CollectionSize.Require(absent = ZERO)
public void testAddAll_supportedSomePresent() {
assertTrue("addAll(somePresent) should return true",
collection.addAll(MinimalCollection.of(samples.e3, samples.e0)));
assertTrue("should contain " + samples.e3, collection.contains(samples.e3));
assertTrue("should contain " + samples.e0, collection.contains(samples.e0));
}
@CollectionFeature.Require(absent = SUPPORTS_ADD_ALL)
@CollectionSize.Require(absent = ZERO)
public void testAddAll_unsupportedSomePresent() {
try {
collection.addAll(MinimalCollection.of(samples.e3, samples.e0));
fail("addAll(somePresent) should throw");
} catch (UnsupportedOperationException expected) {
}
expectUnchanged();
}
@CollectionFeature.Require(absent = SUPPORTS_ADD_ALL)
@CollectionSize.Require(absent = ZERO)
public void testAddAll_unsupportedAllPresent() {
try {
assertFalse("addAll(allPresent) should return false or throw",
collection.addAll(MinimalCollection.of(samples.e0)));
} catch (UnsupportedOperationException tolerated) {
}
expectUnchanged();
}
@CollectionFeature.Require(value = {SUPPORTS_ADD_ALL,
ALLOWS_NULL_VALUES}, absent = RESTRICTS_ELEMENTS)
public void testAddAll_nullSupported() {
List<E> containsNull = singletonList(null);
assertTrue("addAll(containsNull) should return true", collection
.addAll(containsNull));
/*
* We need (E) to force interpretation of null as the single element of a
* varargs array, not the array itself
*/
expectAdded((E) null);
}
@CollectionFeature.Require(value = SUPPORTS_ADD_ALL,
absent = ALLOWS_NULL_VALUES)
public void testAddAll_nullUnsupported() {
List<E> containsNull = singletonList(null);
try {
collection.addAll(containsNull);
fail("addAll(containsNull) should throw");
} catch (NullPointerException expected) {
}
expectUnchanged();
expectNullMissingWhenNullUnsupported(
"Should not contain null after unsupported addAll(containsNull)");
}
@CollectionFeature.Require(SUPPORTS_ADD_ALL)
public void testAddAll_nullCollectionReference() {
try {
collection.addAll(null);
fail("addAll(null) should throw NullPointerException");
} catch (NullPointerException expected) {
}
}
/**
* Returns the {@link Method} instance for {@link
* #testAddAll_nullUnsupported()} so that tests can suppress it with {@code
* FeatureSpecificTestSuiteBuilder.suppressing()} until <a
* href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5045147">Sun
* bug 5045147</a> is fixed.
*/
public static Method getAddAllNullUnsupportedMethod() {
return Platform.getMethod(CollectionAddAllTester.class, "testAddAll_nullUnsupported");
}
}
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